Aeroplane



April 8, 1930. c. PETRUNINV 1,753,938

AEROPLANE Fil'ed Nov. 28, 192'? Patented Apr. 8, 1930 CHARLES'PETBUNIN, 0F TOLEDO, OHIO AEBO'ELANE Application filed November 28, 1927'. Serial No. 236,097.

This invention relates to aeroplanes, but more particularly to relatively large aeroplanes capable of carrying a considerable number of passengers or amount of freight.

An object of this invention is to provide an aeroplane having a plurality of cabins so constructed and arranged that a relatively great load may be carried.

Another object of the invention is to so construct the wings of the aeroplanes that the resistance or impedance to the movement of the aeroplane is reduced to a minimum; a further object of the invention is to provide an aeroplane having the new and improved features of construction and arrangement hereinafter described.

The invention is shown by way of illustration in the accompanying drawings, in which Fig. 1 is a top plan view of the aeroplane;

Fig. 2 is a side elevation of the aeroplane shown in Fig. 1; and Fig. 3 is a front elevation of the aeroplane.

The illustrated-embodnnent of the invention comprises an aeroplane having three sets or wings, upper set 1, an intermediate set 2, and a lower set 3. The upper set 1 of wings is considerably shorter than the wings 2, and in this instance, consists of three plates or segments spaced horizontally from each other. The wings may be constructed of any material suitable for the purpose, and it is apparent that by so constructing the wings of less width and spacing them apart in'the manner shown, the resistance to the travel of the aeroplane is considerably reduced, and the aeroplane is enabled to effect sudden changes in direction of movement with the minimum amount of impedance.

The wings 2 extend considerably beyond the ends of the wings 1, and in this instance, the set 2 of intermediate wings is composed of two plates of panels spaced horizontally from each other, and arranged beneath the outer wings of the set 1, the intermediate wing of the set 1 being disposed in a plate between the wings of the set 2.

The lower wings 3, there being shown two wings of this set, are disposedbeneath the central wings 2 and are considerably shorter than th wings of the set 1. By this construction it is manifest that a well balanced arrangement is secured.

Interposed between the sets ofwings 2 and 8 are cabins 4c and 5 spacedv transversely from each other and arranged adjacentt'he outer ends oft-he win s 3. The opposite'ends of each of the cabins 4 and5 are pointedso as to reduce the resistance tothe travelof" the plane, and these cabins are adapted to'hold passenger or freight, and the motors'for operating tractionpropellers are at opposite ends thereof. A feature of the invention re sides in permitting ready access to the'motors operating the propellers 6 so that in case one motor is disabled it may be readily repaired by mechanics in the cabins r and 5, as will be understood.

E'ach-of'the cabins 4 and 5 is provi'de'd with a pair of supporting wheels? mounted on brackets connected to the underside of the cabinsintermediate the ends thereof; Po si tioned in rear of the supporting wheels I7 is a wheel 8 somewhat smallerthanthewheel 7 and having its axis disposed closer to the cabin-so thattheaeroplane normally assumesan-i'nclin'ed' position with the front or noseelevated from the tail in the usnal'manner'. Positioned in front oft-he supporting wheels 7- and arranged therebetweenfis"a'wheel 9of" similarsize'and similarlysupported to the un-' dersideo'fthe respective cabins; By provida set of'wheels-or rollersfor' each cabin the liability of the aeroplane turning over when landing or startingv is materially" reduced, and the safety is accordingly-enhanced.

Positioned between the cabins' l' and 5' and intermediate the sets of wings l and 2 is a cabin 10, the front'endof' which is pointed and extends beyond the onter'ends ofthe cabins iand 5'. A traction propeller 11 is positioned in the front end of'theca-bin' 10, and the motor is; therefore, accessible from the inside of the cabin. The cabin 10 extends rearwardlv beyond the rear end of'the cabinse and constitutes the tail 12 of the aeroplane, the rudder 13 and elevatingwings 14' being connected thereto in the usual manner. The cabin 10 may be of such size as toaccommod ate'a considerablenumb'er of passengers or to carry a substantial amonnt of freight.

YVhile I have shown and described the best embodiment of my invention known to me at the present time, it is to be understood that numerous changes in details of construction and arrangement of parts may be effected without departing from the spirit of my invention, especially as defined in the appended claims.

hat I claim as new and desire to secure by Letters Patent is:

1. An aeroplane having three sets of wings arranged in vertically spaced relation, the middle wing being considerably longer than the remainder and the top wing being longer than the lower wing, and each wing being composed of horizontally spaced relatively narrow plates.

2. An aeroplane having three sets of wings arranged in vertically spaced relation, the middle wing being considerably longer than the remainder and the top wing being longer than the lower wing, and each wing being composed of horizontally spaced relatively narrow plates, two cabins disposed beneath the central wing and spaced from each other longitudinally of said central wing, and a cabin between said central wing and top wing positioned intermediate of said first cabin.

3. An aeroplane having two cabins disposed beneath the central wing and spaced from each other longitudinally of said central wing, a mounting consisting of two pairs of wheels arranged in transversely spaced relation, a smaller wheel in rear of and between each pair of main wheels, a similar wheel disposed in front and between each pair of main wheels.

4. An aeroplane having a mounting consisting of two pairs of wheels arranged in transversely spaced relation, a smaller wheel in rear of and between each pair of main wheels, and a similar wheel for each pair of main wheels disposed in front and between each pair of main wheels, two cabins disposed beneath the central wing and spaced from each other longitudinally of said central wing, and a cabin between said central wing and top wing positioned intermediate of said first cabins.

5. An aeroplane having three sets of wings arranged in vertically spaced relation, the middle wing being considerably longer than the remainder and the top wing being longer than the lower wing, and each wing being composed of horizontally spaced relatively narrow plates, two cabins disposed beneath the central wing and spaced from each other longitudinally of said central wing, and a cabin between said central wing and top wing positioned intermediate of said first cabins, and traction propellers at the front and rear of each of said pair of cabins, and a propeller in front of the cabin between the central and upper Wings, said cabin be- CHARLES PETRUNIN. 

